-82.47% is the change from 770 to 135
Calculation steps:
[( 135 - 770 ) ÷ 770] x 100 = -82.47%
Formula
Percentage change = [(135 - 770) / 770] x 100
Subtract the new number by the original number
135 - 770 = -635
-635 ÷ 770 = -0.8246753246753247
-0.8246753246753247 x 100 = -82.47%